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Perpenda v1.0 — first release

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@LuminLynx LuminLynx released this 01 Jun 15:10
V1.0
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Learn about vigilant mode.

First public build of Perpenda — an Android app that trains the AI judgment senior product managers now have to use every day. Decision prompts, per-criterion calibrated grading, spaced review. The first 15 units ship now; the remaining 5 "operations" units (monitoring, vendor risk, A/B, fallbacks) are held back so the closed beta decides which production topics matter most. Not a tutorial app.

What's in v1.0

  • 15 units across the core LLM-systems curriculum (tokenization, context windows, latency, evals, cost dynamics, prompt design basics, hallucination + reliability, cost dynamics at scale, fine-tuning vs prompting vs RAG, vector search / RAG fundamentals, streaming UX, tool use, multimodal, agents, safety + content moderation).
  • Per-criterion grading with confidence on every decision prompt — no holistic score.
  • Spaced review on completed units.
  • Cross-device progress sync once signed in.

Privacy at a glance

  • No advertising SDKs, no behavioural analytics, no trackers in the app.
  • Crash diagnostics via Sentry (EU region, stack trace + device model + OS version only — no email, no answers, no tokens).
  • In-app account deletion: About → Delete account.
  • Full policy: https://perpenda.com/legal/privacy-policy.html

Install (sideload)

  1. Download app-release.apk below on your Android phone.
  2. Tap the file in your file manager. You'll be asked to "install from unknown source" — approve for that file manager.
  3. Google Play Protect will run a pre-install scan and confirm "this app looks safe".
  4. Open and sign in.

Verify the download (optional)

The SHA-256 hash is in app-release.apk.sha256. On a desktop:

​ sha256sum -c app-release.apk.sha256 ​

Requirements

  • Android 8.0 (API 26) or newer.
  • Internet access — the app talks to perpenda.com / our backend on Railway.

Updates

The app checks perpenda.com/latest.json on launch and surfaces a banner when a new version is available. Sideload only; Play distribution is not part of this release.

Issues

Crashes go straight to Sentry. Anything else: hello@perpenda.com or open an issue here.

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